players can steal carts and get in your house
-
If you try to access a carts inventory it says it belongs to someone else and wont't let you, but if you take it for a spin, it becomes yours and you can now take it away and access the inventory.
You can get open and close someone elses houses door and enter.
I believe that only you and maybe your friends (currently not available in game) should be able to open your door and get inside and operate your cart.